§1 THE END OF AN AGE IN THIS SMALL BOOK I want to set down as compactly, clearly and usefully as possible the gist of what I have learnt about war and peace in the course of my life. I am not going to write peace propaganda here. I am going to strip down certain general ideas and realities of primary importance to their framework, and so prepare a nucleus of useful knowledge for those who have to go on with this business of making a world peace. I am not going to persuade people to say " Yes, yes" for a world peace; already we have had far too much abolition of war by making declarations and signing resolu- tions ; everybody wants peace or pretends to want peace, and there is no need to add even a sentence more to the vast volume of such in- effective stuff. I am simply attempting to state the things we must do and the price we must pay for world peace if we really intend to achieve it.